well...I have ruled out the grey catbird; I have been leaning towards the Warbling Vireo or the Townsend Solitaire. I had borrowed my neighbors field guide when I started shooting birds earlier this summer; I have a passion for catching them in flight (caught this fantastic brown thrasher earlier in the season). but this bird I couldn't find...I have several angles of him/her but the only identifying marker was the white rim around the eye.... so....after a long winded explanation, yes, please tell me....

thanks! I see it now...more so in the black centered part of the tail than overall coloring; might have been the sun shadows... the other blue gray gnatcatcher I shot was definite in identifying with tail up and really bluish-gray... again, thanks!